from rest_framework.views import exception_handler
from django.db import DatabaseError
from rest_framework.response import Response
from rest_framework import status
import logging

logger = logging.getLogger('django')

def custom_exception_handler(exc, context):
    response = exception_handler(exc, context)

    # 判断
    if response is None:
        view = context['view']
        if  isinstance(exc, DatabaseError):
            # 数据库异常
            logger.error("[%s] %s" % (view, exc))
            response = Response({"message": "服务器内部错误，请联系管理员！"}, status=status.HTTP_507_INSUFFICIENT_STORAGE)

    return response